A new Drug enzyme PKR has shown to dramatically improve learning and memory in mice. The new molecule could show promise as a therapy for Alzheimer’s disease in humans, researchers say. The treatment involves the enzyme PKR, which protects against viral infections. It serves two functions in the brain, acting as a stress responder that can cause cell death and regulating synaptic activity as it relates to the formation of memories. The discovery that mice lacking PKR in the brain have a kind of "super" memory. Scientist found that when we genetically inhibit PKR, we increased the excitability of brain cells and enhanced learning and memory.
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